Vehicle brake device



C. D. STEWART VEHICLE BRAKE DEVICE April 15 1924.

Filed May 5, 1921 INVENTOR' CARLTON D.5TEWART ATT ORNEY 25 rocker arms 4 and 5.

Patented Apr. 15,1924.

UNITED STATES] oAnmon n. STEWAR'I, or BERKELEY, CALIFORNIA, Assrenon TO THE wns'rmewmmnnnme, PENNSYLVANIA, A CORPORATION HOUSE AIR BRAKE COMPANY, OF OF PENNSYLVANIA.

VEHICLE BRAKE DEVICE.

Application filed May 5, 1921. Serial No. 467,042.

To allwhom it may concern:

Beit known that I, CARLTON D. STEWART, a citizen of the United States, residingat Berkeley, in the county of Alameda and State of. California, have invented new and useful Improvements in Vehicle Brake Devices, of which the following is a specification.

p This invention relates to brakes, and 1 more particularly to a motor vehicle brake apparatus.

The principal object ofmy invention is to provide means operable by the foot for controlling both the power and the vehicle brakes. p K

' In the accompanying drawing; Fig. 1 is a diagrammatic view of a combined power and brake controlling mechanism embodying my invention; and Fig. 2 a side eleva- 2 tion of the construction shown in' Fig. 1.

According to a preferred form of my invention, a shaft'1 is mounted in suitable bearing blocks 2 and secured'to said shaft is a foot pedal 3 and a member having The arm iengages a push rod 6 having anadjustable stop 9"for engaging'a lever 7 through the movement of which the brakes are controlled and the arm 5 engages a push rod 8 having an adjustable stop 10 for engaging a lever 11, the move-' ment of' which is adapted to control the power of the vehicle.

The movement of lever 11 may operate a carburetor 12'of the usual construction and is acted upon'by a coil spring 13, tending to press the lever against the stop 10. The movement of lever 7 may operate to control various types of brakes, suchas pneumatic-and electro-pneumatic, and vfor the purpose of illustration, I have shown the lever 7 as operating a contact drum 14 having contacts adapted to engage contact fingers 15 and 16 for controlling electric circuits. of a brake system, such as that set V forth in my pending application, Serial No. 467,041, filed May 5, 1921.

The position of the foot pedal 3 as shown I in. Fig. 1 may be termed the neutral posi- 59 tion and said-pedal is normally maintained in this position by theaction of the springs 13 and 17.

In operation, movement of the pedal 3 to the right by the application of the foot,

causes the arm 5 to depress the push rod 8 and thereby effect the movement of the lever 11, so that the carburetor 12 is op- Aerated to vary the power of the vehicle in the usual manner. A

Movement of the pedal 3 from neutral position to the left causes the arm 4 to depress the push rod 6 and thereby effect the movement of the lever 7 and the'rotation of the drum 14.

be held applied, or if it is desired to release the brakes, the pedal may be returned to neutral position, in which the release magnet is energized to efiect the release of the brakes.

It is not deemed necessaryto illustrate the brake apparatus since it will be evident that the movement of the leve'r7 may be readily utilized for that purpose and furthermore a complete brake apparatus suitable for control by movement of the drum 14 is set forth {in my pending application, hereinbefore referred to.

Having now described" my invention,

what I claim as new and desire to securev by Letters Patent, is: I

' 1. Ina motor vehicle control, the combination with a rotatable foot operated member comprising a foot engageable element and oppositely disposed arms, of

means operated by the movement of one arm for controlling the power of thevehicle and means operated by the movementof the other arm for controlling the vehicle brakes.

2. In amotor vehicle control,.the co n bination with a rotatable foot operated member comprising a foot engageable element and oppositely disposed arms, of

means operated by one arm'upon movement of said member in one direction for controlling the application of power to the vehicle and means operated by the other 3. In a motor vehicle'cont rol device, the

combination with a. foot dal movable by the ap lication of power to the vehicle and lo a lateral movement of th: foot in either a. in rod for eontrolling the vehicle direction and oppositely extendin arms bra es; of a, shaft, a, rocker arm secured to rigidly connected to said pedal, 0 means said shaft for engagi each push rod, and 6 operable by one arm for controlling the= afoot operated ped f for operating said power of the vehicle and means 0 table shaft. P v

by the other arm for controlling the rakes. In testimony whereof I have hereunto 4. In a motor vehicle control, the com set my hand. I bination with a push rod for controlling CARLTON D. STEWART. 

